True. The most popular Unix is after all macOS, followed shortly by WSL2
There are way more servers running linux than there are macos installs. And wsl2 is linux.
Number of servers isn’t the right metric imho.
Literally all code I write runs on Windows, macOS, Android, and Linux. In roughly that order of priority. No I do not and will not use WSL2, it’s an abomination.